Born in London in 1944 but raised in a rural area, Green met other pagans after entering university at 29. As of 2002 she had worked in publishing for most of her career.
She founded and continues to organise the Quest Conference held every year in the UK and has edited the magazine Quest since founding it in 1970. She created the Green Circle, a network of pagans and magicians, in 1982. She was previously a council member of the Pagan Federation and the Editor of Pagan Dawn.
